Lock-hinge.



No. 825,430. PATENTED JULY 10, 1906. 0. H. SWAN, DEOD.

G. M. SWAN, ADMINISTRATEIX.

LOGK- HINGE.

APPLICATION FILED SEPT. 27, 1904.

marten STATES PATENT. OFFICE.

CALEB H. SWAN, OF HYDE PARK, MASSACHUSETTS; GRACE M. SWAN ADMINISTRATRIX OF SAID CALEB .H. SWVAN, DECEASED.

LOCK-HINGE.

Specification of Letters Patent Patented July 10, 1906.

Applicatini filed September 27. 1904- Serial No. 226.131.

To (bi Z whom it may concern:

Be it known that I, CALEB H. SWAN, of rlyde Park, in the county of Norfolk and State of Massachusetts, have invented a new and useful Lock-Hinge, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to loclehinges; and it consists in the combination of two mem bers pivotally connected, one member being fixed and the other movable and one having notches in its outer edges and the other having locking means to engage one of the notches when the hinge is open and the other notch when the hinge is closed. and means to hold the locking means in engagement with the notched member to prevent the disconnection of the two members when the locking means is between the notches.

Other features of the invention are hcrcinafter described.

In the drawings, Figure 1 shows the blank for one member of my hinge when constructed in its preferred form. Fig. 2 shows the blank for .theother member. Fig. 3 is a front elevation of my complete hinge as made from those two blanks, and the cam-lever. 4 is a plan, Fig. 5 a side elevation, and Fig. 6 a perspective.

The movable member of my hinge is formed from the blank shown in Fig. 1 by bending it at right angles on the dotted line b,whereby the Hat part a with its brace a are brought into the position shown in Fig. 3that is, at right angles with the fiat part 0.in order that the hole in the flat part a may receive the pintle (Z the flat part a being also bent at right angles to the part a on dotted line b to stand across the fiat part a, as shown in Fig. 3, leaving tailpiece a of flat part a to serve as a housing for the camlever F, described below, and also fitting the movable member to be firmly secured to the corner of the blind by screws through the holes 8 s and also by a screw through the countersunk hole 3 as will be plain from Figs. 1 and 6.

The fired member of my hinge is formed from the blank shown in Fig. 2 by bending part (1 at right angles to part d on the dotted line b and by bending the pintle (i so as to stand at right angles to d in order that it may pass through the pintle-hole in part a as will be clear from Fig. 3 and also from Figs. 2, 4, and 6.

The cam-lever F, while it may be made of cast-iron, is best formed from wire with its cam f as a short strip of sheet metal bent about it and secured by the pin f and is secured in place by passing its inner end through hole .9 in part a and by bending tailpiece a of part a about it, as clearly shown in Figs. 1, 2, 3, and 4. The collars f and f are attached to the horizontal arm of lever F with a space between them to receive tailpiece (1 which thus acts with the collars to prevent lateral movement of lever F. Counterweight or handle f tends to rotate lever F, so that cam facts against shoulder d and tends to force the blind into its most open position and lock it there, while the cam acting on shoulder d tends to force the blind into its closed position and lock it there. The shoulders'just referred to are the sides of the notches into which the bolt or cam with its cam-faces enters, and they serve the purpose of acting each with the appropriate cam-face to force the blind into its locked or open positionthat is, the side of notch (1 acts against one cam-face to force the blind to its open position and the side ofnotch (1 acts against the other cam-face to force the blind to its closed position. The projecting portion of pin f serves as a stop to the cam when the lever is lifted to allow the edge of part (1 to clear through the notch f, Fig. 3, in the periphery of cam {in order to swing part a on pintle d as an axis to open or close the blind, and this stop limits the motion of the cam, so that when the cam is not engaging a notch it is beneath the fixed member, and the result is that it will catch beneath the fixed member and prevent the blind being lifted from its pivot.

It will be obvious that the details of form of the two members may be widely varied; but the forms shown are the best I have con templated for locking the hinge members and preventing their accidental disconnection, and the double-faced cam effectually prevents rattling. I

What I claim is 1. In a lock-hinge the combination of two members pivotally connected, one member ICO being fiXed and the other movable, and one having notches in its outer edges and the other having locking means to engage one of said notches when the hinge is open and the other notch when the hinge is closed, and means to hold the looking means in engagement with the notched member to prevent the disconnection of the two members when the locking means is between the notches, substantially as shown and described.

2. In a lock-hinge the combination of two members pivotally connected, one member adapted to be fastened to a blind and the other to a wall or the like; a cam on one member and having two faces; a pair of shoulders on the other member, one of the shoulders cooperating with one face of the cam to force the blind toward its open position and lock it there, and the other shoulder cooperating with the other face of the cam to force the blind toward its closed position and lock it there; and means to operate the cam.

3. In a lock-hinge, the combination with a fixed member having notches in its outer edges; of a movable member pivotally connected to the fixed member, a shaft mounted to rotate on the movable member, a cambolt secured to said shaft, and constructed and arranged to engage one of said notches when the hinge is open and the other notch when the hinge is closed, said cam-bolt carrying a stop constructed and arranged to prevent the disconnection of thetwo members when the cam-bolt is out of engagement with either of said notches, substantially as shown and described.

' CALEB H. SWAN. Witnesses LLEWELLYN H. BARTLETT, WILBERT S. BARTLETT. 

